S
M
T
W
T
F
S
29
48°
37°
30
51°
36°
1
49°
33°
2
45°
32°
3
41°
31°
4
47°
33°
5
47°
33°
6
41°
30°
7
35°
25°
8
33°
21°
9
32°
23°
10
38°
27°
11
40°
30°
12
42°
28°
13
40°
28°
14
34°
22°
15
36°
24°
16
37°
28°
17
40°
26°
18
36°
22°
19
35°
17°
20
31°
16°
21
29°
15°
22
29°
22°
23
35°
25°
24
34°
23°
25
34°
13°
26
32°
10°
27
28°
11°
28
28°
12°
29
27°
15°
30
28°
20°
31
29°
13°
1
33°
8°
2
28°
7°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sidell
Sidell's December 2026 forecast shows daily high temperatures ranging from 27° to 51°, with overnight lows between 7° and 37°. The average high for December is 36° with an average low of 23°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Sidell. See also: January | February | March.
